Ectopic Acth Syndrome
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Cushing’s syndrome due to ectopic adrenocorticotropin secretion by a parotid carcinoma
SUMMARY We report a rare case of Cushing’s syndrome in a 37-year-old female who initially presented with localized acinic cell carcinoma of the parotid gland. In January 2014, she underwent a right parotidectomy with facial nerve preservation and adjuvant radiotherapy. In August 2018, she presented a histologically-proven local regional relapse. The patien
Archives of Endocrinology and Metabolism. Publicado em: 2022
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2. Ectopic Cushing syndrome in Colombia
ABSTRACT Objective The aim was to describe the clinical features of patients with ectopic Cushing syndrome (ECS) from Colombia and compare these findings with other series to provide the best management for these patients. Materials and methods Records of patients with ECS from 1986 to 2017 were retrospectively reviewed; patients with a diagnosis of adre
Arch. Endocrinol. Metab.. Publicado em: 2020-12
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3. The 4Ds of ectopic ACTH syndrome: diagnostic dilemmas of a difficult disease
SUMMARY Cushing’s syndrome (CS) is an uncommon condition that leads to high morbidity and mortality. The majority of endogenous CS is caused by excessive ACTH secretion, mainly due to a pituitary tumor – the so-called Cushing’s disease (CD) – followed by ectopic ACTH syndrome (EAS), an extra-pituitary tumor that produces ACTH; adrenal causes of CS ar
Arch. Endocrinol. Metab.. Publicado em: 25/04/2019
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4. A rare case of ectopic ACTH syndrome originating from malignant renal paraganglioma
SUMMARY Ectopic adrenocorticotropic hormone (ACTH) syndrome is characterized by hypercortisolism due to the hypersecretion of a non-pituitary ACTH-secreting tumor leading to Cushing’s syndrome. Only a few cases have been reported previously as causing ectopic ACTH related to paraganglioma. Herein, we present a case of Cushing’s syndrome, in who was prove
Arch. Endocrinol. Metab.. Publicado em: 13/02/2017
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5. Study of mRNA expression of the receptors for vasopressin (AVPR1B), corticotropin releasing hormone (CRHR1) and GH secretagogues (GHSR-1a) in patients with ACTH-dependent Cushings syndrome: clinical-molecular correlation / Estudo da expressão do receptor da vasopressina (AVPR1B), do receptor do hormônio liberador de corticotrofina (CRHR1) e do receptor dos secretagogos de GH (GHSR-1a) em pacientes portadores de síndrome de Cushing ACTH-dependente: correlação clínico-molecular
INTRODUCTION: The differential diagnosis of ACTH-dependent Cushings syndrome (CS) is one of the major challenges in endocrinology, especially in view of the similar clinical and laboratorial behavior between some carcinoid tumors and Cushings disease (CD). Hence, dynamic tests of ACTH and cortisol release have been carried out with the aim to identify predic
Publicado em: 2006
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6. The diversity of abnormal hormone receptors in adrenal Cushing's syndrome allows novel pharmacological therapies
Recent studies from several groups have indicated that abnormal or ectopic expression and function of adrenal receptors for various hormones may regulate cortisol production in ACTH-independent hypercortisolism. Gastric inhibitory polypeptide (GIP)-dependent Cushing's syndrome has been described in patients with either unilateral adenoma or bilateral macrono
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-10
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7. Corticotropin-releasing hormone, proopiomelanocortin, and glucocorticoid receptor gene expression in adrenocorticotropin-producing tumors in vitro.
To differentiate between ectopic ACTH syndrome and Cushing's disease, gene expression of corticotropin-releasing hormone (CRH), proopiomelanocortin (POMC), and glucocorticoid receptor was examined in 10 pituitary adenomas (Cushing's disease) and in 10 ectopic ACTH-producing tumors. CRH increased plasma ACTH levels in all patients with Cushing's disease and i
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8. The pituitary V3 vasopressin receptor and the corticotroph phenotype in ectopic ACTH syndrome.
Ectopic ACTH secretion occurs in highly differentiated and rather indolent tumors like bronchial carcinoids or, in contrast, in various types of aggressive and poorly differentiated neuroendocrine tumors. We explored this phenomenon using the recently cloned human pituitary V3 vasopressin receptor as an alternate molecular marker of the corticotroph phenotyp
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9. Biologic and Immunologic Characterization and Physical Separation of ACTH and ACTH Fragments in the Ectopic ACTH Syndrome
Extracts of tumors from 32 patients with the ectopic ACTH syndrome were subjected to simultaneous bioassay and radioimmunoassays for ACTH. Radioimmunoassays were performed using three antisera, one of which reacts with the extreme N-terminal 1-13 amino acid sequence of ACTH, the second with the N-terminal 1-23 sequence of the ACTH molecule, and the third wit
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10. Diagnostic Accuracy of Chromogranin A and Calcitonin Precursors Measurements for the Discrimination of Ectopic ACTH Secretion from Cushing’s Disease
Context: Inferior petrosal sinus sampling (IPSS) best discriminates between the two causes of ACTH-dependent Cushing’s syndrome, Cushing’s disease (CD) and ectopic ACTH secretion (EAS). However, when sampling is not available, adjunctive diagnostic tests might be helpful. Neuroendocrine tumors may secrete chromogranin A (CgA), calcitonin (CT), procalcito
The Endocrine Society.
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11. Immunocytochemical study of 18 tumours causing ectopic Cushing's syndrome.
Eighteen cases of Cushing's syndrome caused by ectopic production of peptide hormones were investigated by histological and immunocytochemical methods and the findings correlated with clinical and biochemical observations. Immunocytochemistry showed immunoreactive adrenocorticotrophic hormone (ACTH) or peptides derived from the ACTH precursor (pro-opiomelano
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12. Normal and abnormal regulation of β-MSH in man
The regulation of plasma β-melanocyte-stimulating hormone (β-MSH) in man has been studied utilizing a radioimmunoassay previously described (1). In normal subjects plasma β-MSH values ranged from 20 to 110 pg/ml. Metyrapone increased and dexamethasone decreased plasma β-MSH levels. Surgical stress stimulated β-MSH secretion. Plasma β-MSH levels were el